And then there's Windows 8.
Also, while we're on the subject, my 8 year old can put together an amazing Keynote presentation on an iPad. She has never used a Windows OS.
Find a modern 8-year old, who understand PC circuitry (at analog and digital level), seen manufacturing processes, can re-solder components, can write C/assembly, can develop basic useful applications (like, say MS Paint). I bet you could easily find one like that, back in 70s-90s, particularly here in the silicon valley. Now - I'm not so sure.
From "Basic -> C/assembly"? Wow. That escalated quickly.